Unipivot tone arms

I agree with the sentiment that it is all in the execution. Each implementation has theoretical advantages in some way and if properly designed and executed, any of them can shine. A tonearm is a precision instrument so the best are not inexpensive, but I think once you reach a certain level they all are very capable performers.

I have Kuzma Airline linears that are superb, but I think my Bird of Prey (http://www.robyattaudio.com/) unipivot is a bit better. It is viscous and magnetically damped. It is in no way "wobbly." You would not know it is a unipivot just by how it feels. The designer claims that a unipivot can "lock" into the groove in a way that non unipivots can't.. Makes sense that it is more adaptable in that way. In any case, some of my lesser cartridges sound really, really good on this arm. The better ones sound superb.

I've also had extensive experience with the Moerch DP-8 and it is also world class, especially for the $$.

Like I said at the beginning of this thread, there are many modern tonearms that could be categorized as "unipivot", but the best ones are actually modified unipivots so as in one way or another to cure the inherent issues with a pure unipivot. Graham, Kuzma, VPI (with the add-on option), and I am sure many others are in this category. Results can be superb. But a pure unipivot, like the Keith Monks (which I also once owned) is passe’, in my opinion. Besides, the mercury bath contacts (Keith Monks) were a nightmare.